pacman-key: treat foo-trusted as an ownertrust export file

This allows it to serve double-duty. In order to allow users to base
verification decisions off of both a valid signature and a trusted
signature, we need to assign some level of owner trust to the keys we
designate as trusted on import.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 18 insertions, 6 deletions

diff --git a/scripts/pacman-key.sh.in b/scripts/pacman-key.sh.in
index da07492c..482e0468 100644
--- a/scripts/pacman-key.sh.in
+++ b/scripts/pacman-key.sh.in
@@ -215,7 +215,7 @@ verify_keyring_input() {
 	local ret=0;
 	local KEYRING_IMPORT_DIR='@pkgdatadir@/keyrings'
 
-	# Verify signatures of keyring files and association revocation files if they exist
+	# Verify signatures of keyring files and trusted/revoked files if they exist
 	msg "$(gettext "Verifying keyring file signatures...")"
 	local keyring keyfile
 	for keyring in "${KEYRINGIDS[@]}"; do
@@ -278,14 +278,18 @@ populate_keyring() {
 		"${GPG_PACMAN[@]}" --import "${KEYRING_IMPORT_DIR}/${keyring}.gpg"
 	done
 
-	# Read the trusted key IDs to an array. The conversion from whatever is inside the file
-	# to key ids is important, because key ids are the only guarantee of identification
-	# for the keys.
+	# Read the trusted key IDs to an array. Because this is an ownertrust
+	# file, we know we have the full 40 hex digit fingerprint values.
+	# Format of ownertrust dump file:
+	#  40CHARFINGERPRINTXXXXXXXXXXXXXXXXXXXXXXX:6:
+	#  40CHARFINGERPRINTXXXXXXXXXXXXXXXXXXXXXXX:5:
 	local -A trusted_ids
 	for keyring in "${KEYRINGIDS[@]}"; do
 		if [[ -f "${KEYRING_IMPORT_DIR}/${keyring}-trusted" ]]; then
 			while read key; do
-				key_id="$("${GPG_PACMAN[@]}" --quiet --with-colons --list-key "${key}" 2>/dev/null | grep ^pub | cut -d: -f5)"
+				# skip comments; these are valid in this file
+				[[ $key = \#* ]] && continue
+				key_id="${key%%:*}"
 				if [[ -n ${key_id} ]]; then
 					# Mark this key to be lsigned
 					trusted_ids[$key_id]="${keyring}"
@@ -300,9 +304,17 @@ populate_keyring() {
 			msg2 "$(gettext "Locally signing key %s...")" "${key_id}"
 			"${GPG_PACMAN[@]}" --quiet --lsign-key "${key_id}"
 		done
+		msg "$(gettext "Importing owner trust values...")"
+		for keyring in "${KEYRINGIDS[@]}"; do
+			if [[ -f "${KEYRING_IMPORT_DIR}/${keyring}-trusted" ]]; then
+				"${GPG_PACMAN[@]}" --import-ownertrust "${KEYRING_IMPORT_DIR}/${keyring}-trusted"
+			fi
+		done
 	fi
 
-	# Read the revoked key IDs to an array.
+	# Read the revoked key IDs to an array. The conversion from whatever is
+	# inside the file to key ids is important, because key ids are the only
+	# guarantee of identification for the keys.
 	local -A revoked_ids
 	for keyring in "${KEYRINGIDS[@]}"; do
 		if [[ -f "${KEYRING_IMPORT_DIR}/${keyring}-revoked" ]]; then